Consistent and Minimal Springback Using a Stepped Binder Force Trajectory and Neural Network Control

[+] Author and Article Information
Jian Cao, Brad Kinsey

Department of Mechanical Engineering, Northwestern University, Evanston, IL 60208

Sara A. Solla

Department of Physics and Astronomy, Northwestern University, Evanston, IL 60208; Department of Physiology, Northwestern University Medical School, Chicago, IL 60611

J. Eng. Mater. Technol 122(1), 113-118 (Jun 14, 1999) (6 pages) doi:10.1115/1.482774 History: Received June 20, 1998; Revised June 14, 1999
Copyright © 2000 by ASME
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Resulting binder force trajectories for closed-loop control following punch force trajectory
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The target and actual punch force trajectories in closed-loop control
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Punch force trajectory for 0 to 10 mm of punch travel
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Final part shape with increasing constant binder force
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Springback angle and maximum strain versus constant binder force
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Flowchart of proposed neural network control system
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Channel forming geometry
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Stepped binder force trajectory



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